JP2013082627A5 - - Google Patents

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Publication number
JP2013082627A5
JP2013082627A5 JP2013023182A JP2013023182A JP2013082627A5 JP 2013082627 A5 JP2013082627 A5 JP 2013082627A5 JP 2013023182 A JP2013023182 A JP 2013023182A JP 2013023182 A JP2013023182 A JP 2013023182A JP 2013082627 A5 JP2013082627 A5 JP 2013082627A5
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Japan
Prior art keywords
glass
sro
alkali
bao
cao
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JP2013023182A
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JP2013082627A (en
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Claims (10)

酸化物基準においてモルパーセントで、
ＳｉＯ２ ６４．０−７２．０
Ａｌ２Ｏ３ ９．０−１６．０
Ｂ２Ｏ３ ＞０．０−５．０
ＭｇＯ ２．０−７．５
ＣａＯ ２．０−７．５
ＢａＯ １．０−６．０
を含むと共に、任意成分としてＳｒＯを含み、
（１）１．１５≦Σ（ＭｇＯ＋ＣａＯ＋ＳｒＯ＋ＢａＯ）／（Ａｌ２Ｏ３）≦１．５０
という関係を満たし、式中、Ａｌ２Ｏ３、ＭｇＯ、ＣａＯ、ＢａＯ、ＳｒＯが、各酸化物成分のモルパーセントを表すものであり、
（２）任意成分であるＳｒＯを含む場合は、モルパーセントにおけるＢａＯ／ＳｒＯ比が２．０以上であり、
（３）ＳｉＯ ２ 、Ａｌ ２ Ｏ ３ 、Ｂ ２ Ｏ ３ 、ＭｇＯ、ＣａＯ、ＢａＯ、ＳｒＯ，Ｌａ ２ Ｏ ３ 以外のいかなる酸化物の量も２．０モルパーセント以下であり、
（４）７００℃以上のひずみ点を有し、
（５）６００℃で５分間の熱処理に対して３０ｐｐｍ未満の寸法変化を呈し、
（６）２８．０ＧＰａ・ｃｍ ３ ／ｇ以上のヤング率／密度比を有する、
アルカリを含まないガラス。 Mole percent on oxide basis,
SiO 2 64.0-72.0
Al 2 O 3 9.0-16.0
B 2 O 3> 0.0-5.0
MgO 2.0-7.5
CaO 2.0-7.5
BaO 1.0-6.0
And SrO as an optional component,
(1) 1.15 ≦ Σ (MgO + CaO + SrO + BaO) / (Al 2 O 3) ≦ 1.5 0
Satisfies the relation, wherein, Al 2 O 3, MgO, CaO, BaO, SrO is state, and are not representative of the mole percent of each oxide component,
(2) When SrO, which is an optional component, is contained, the BaO / SrO ratio in mol percent is 2 . 0 or more,
(3) The amount of any oxide other than SiO 2 , Al 2 O 3 , B 2 O 3 , MgO, CaO, BaO, SrO, La 2 O 3 is 2.0 mole percent or less,
(4) having a strain point of 700 ° C. or higher,
(5) exhibits a dimensional change of less than 30 ppm with respect to a heat treatment at 600 ° C. for 5 minutes,
(6) having a Young's modulus / density ratio of 28.0 GPa · cm 3 / g or more,
Glass without alkali. ３０．０ＧＰａ・ｃｍ ３ ／ｇを超えるヤング率／密度比を有することを特徴とする請求項１記載のアルカリを含まないガラス。 2. The alkali-free glass according to claim 1 , having a Young's modulus / density ratio exceeding 30.0 GPa · cm 3 / g . ３２．２ＧＰａ・ｃｍ ３ ／ｇを超えるヤング率／密度比を有することを特徴とする請求項１記載のアルカリを含まないガラス。 2. The alkali-free glass according to claim 1 , having a Young's modulus / density ratio exceeding 32.2 GPa · cm 3 / g . Ａｓ ２ Ｏ ３ およびＳｂ ２ Ｏ ３ の含有量が各々０．００５モルパーセント以下であることを特徴とする請求項１、２または３記載のアルカリを含まないガラス。 The glass containing no alkali according to claim 1 , 2 or 3, wherein the contents of As 2 O 3 and Sb 2 O 3 are each 0.005 mole percent or less . １５０，０００ポアズ以上の液相線粘度を有することを特徴とする請求項１から４いずれか１項記載のアルカリを含まないガラス。 The alkali-free glass according to any one of claims 1 to 4, which has a liquidus viscosity of 150,000 poise or more . 請求項１から５いずれか１項記載のガラスを含む液晶ディスプレイ用基板。 Substrate for a liquid crystal display comprising a glass according to any of the preceding claims 1 to. ダウンドロー法によりアルカリを含まないガラスシートを製造する方法であって、
ガラスシートを構成するガラスが請求項１記載の組成を有するようにバッチ材料を選択し、溶融し、そして清澄する各工程を含み、
（ａ）前記清澄を、大量のヒ素を用いずに実施し、
（ｂ）溶融および清澄したバッチ材料からダウンドロー法により製造された５０枚の連続したガラスシートの集合体の平均ガス含有レベルが、０．１０ガス含有／立方センチメートル未満であり、前記集合体の各シートの体積が、少なくとも５００立方センチメートルであることを特徴とする方法。 A method for producing a glass sheet not containing alkali by a downdraw method,
Selecting, melting and clarifying batch materials such that the glass constituting the glass sheet has the composition of claim 1,
(A) performing the clarification without using a large amount of arsenic;
(B) the average gas content level of an assembly of 50 consecutive glass sheets produced from the melted and clarified batch material by the downdraw method is less than 0.10 gas content / cubic centimeter; The method wherein the volume of the sheet is at least 500 cubic centimeters. 前記ダウンドロー法がフュージョンドロー法であることを特徴とする請求項７記載の方法。 The method according to claim 7, wherein the downdraw method is a fusion draw method. 前記ガラスシートを構成するガラスが１５０，０００ポアズ以上の液相線粘度を有することを特徴とする請求項７または８記載の方法。The method according to claim 7 or 8, wherein the glass constituting the glass sheet has a liquidus viscosity of 150,000 poise or more. 前記ガラスシートを液晶ディスプレイ用基板として使用することをさらに含むことを特徴とする請求項７，８または９記載の方法。 The method according to claim 7, 8 or 9, further comprising using the glass sheet as a substrate for a liquid crystal display.
JP2013023182A 2006-02-10 2013-02-08 Glass composition having high thermal and chemical stability and method for producing the same Pending JP2013082627A (en)

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US60/772,600 2006-02-10

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JP2013023181A Active JP5852598B2 (en) 2006-02-10 2013-02-08 Glass composition having high thermal and chemical stability and method for producing the same
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US (4) US7833919B2 (en)
EP (1) EP1996525B1 (en)
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KR (1) KR101399745B1 (en)
CN (3) CN101400614B (en)
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